float a, b, c;
int main()
{
    c = b = a = 1;
    printf("a = %f, b = %f, c = %f\n", a, b, c);
    c = b = 2;
    printf("b = %f, c = %f\n", b, c);
    c = 3.5;
    printf("c = %f\n", c);    
    return 0;
}